com.sap.dirigible.ide.workspace.ui.commands.UploadDataWizardPage.java Source code

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Here is the source code for com.sap.dirigible.ide.workspace.ui.commands.UploadDataWizardPage.java

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/*******************************************************************************
 * Copyright (c) 2014 SAP AG or an SAP affiliate company. All rights reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 *******************************************************************************/

package com.sap.dirigible.ide.workspace.ui.commands;

import java.io.File;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Text;

import com.sap.dirigible.ide.workspace.ui.shared.FocusableWizardPage;

/**
 * The upload wizard page, that contains: 1) an info message about the possible
 * user input 2) a browse button for selecting files 3) an SWT list that
 * contains the selected .dsv files
 * 
 */
public class UploadDataWizardPage extends FocusableWizardPage {

    private static final String FILE_EXTENSION_DSV = "*.dsv"; //$NON-NLS-1$

    private static final long serialVersionUID = -5429650850261852397L;

    private static final String INFO_MSG = Messages.UploadDataWizardPage_INFO_MSG;

    private static final String PAGE_NAME = "Main Page"; //$NON-NLS-1$

    private static final String PAGE_TITLE = Messages.UploadDataWizardPage_PAGE_TITLE;

    private static final String PAGE_DESCRIPTION = Messages.UploadDataWizardPage_PAGE_DESCRIPTION;

    private FileDialog dlg;

    private List fileList;

    private java.util.Set<String> filesPaths = new HashSet<String>();

    protected UploadDataWizardPage() {
        super(PAGE_NAME);
        setTitle(PAGE_TITLE);
        setDescription(PAGE_DESCRIPTION);
    }

    @Override
    public void createControl(Composite parent) {
        Composite composite = new Composite(parent, SWT.NONE);
        setControl(composite);
        composite.setLayout(new GridLayout(3, false));
        createInfoMsgArea(composite);
        createFilesArea(composite);
    }

    private void createInfoMsgArea(Composite composite) {
        // create the info image
        GridData gridDataInfoImage = new GridData();
        gridDataInfoImage.horizontalAlignment = GridData.END;
        gridDataInfoImage.verticalAlignment = GridData.FILL;
        Label infoImage = new Label(composite, SWT.NONE);
        infoImage.setImage(JFaceResources.getImage(TitleAreaDialog.DLG_IMG_MESSAGE_INFO));
        infoImage.setLayoutData(gridDataInfoImage);
        // create the info text
        Text infoMsg = new Text(composite, SWT.MULTI | SWT.WRAP | SWT.V_SCROLL);
        GridData gridDataInfoMsg = new GridData(GridData.FILL_HORIZONTAL);
        gridDataInfoMsg.horizontalSpan = 2;
        gridDataInfoMsg.widthHint = 400;
        infoMsg.setText(INFO_MSG);
        infoMsg.setLayoutData(gridDataInfoMsg);
    }

    private void createFilesArea(Composite composite) {
        // create the files label
        Label fileLabel = new Label(composite, SWT.NONE);
        fileLabel.setText(Messages.UploadDataWizardPage_FILES);
        // create the files list
        fileList = new List(composite, SWT.BORDER | SWT.V_SCROLL);
        fileList.setLayoutData(new GridData(GridData.FILL_BOTH));
        // create the browse button
        Button browseButton = new Button(composite, SWT.PUSH);
        browseButton.setText(Messages.UploadDataWizardPage_BROWSE);
        browseButton.addSelectionListener(new SelectionAdapter() {
            private static final long serialVersionUID = 2205011133121002918L;

            public void widgetSelected(SelectionEvent e) {
                handleFileBrowseButtonPressed(e);
            }
        });
        browseButton.setEnabled(true);
        browseButton.setVisible(true);
        setFocusable(browseButton);
    }

    private void handleFileBrowseButtonPressed(SelectionEvent event) {
        dlg = new FileDialog(getShell(), SWT.TITLE | SWT.MULTI);
        dlg.setAutoUpload(true);
        dlg.setText(Messages.UploadDataWizardPage_UPLOAD_DATA);
        dlg.setFilterExtensions(new String[] { FILE_EXTENSION_DSV });
        dlg.open();
        if (dlg.getFileNames().length > 0) {
            filesPaths.addAll(Arrays.asList(dlg.getFileNames()));
            setFilesInUI();
            setPageComplete(true);
        }
    }

    @Override
    public boolean isPageComplete() {
        return !filesPaths.isEmpty();
    }

    private void setFilesInUI() {
        fileList.removeAll();
        for (String file : filesPaths) {
            String fileName = new File(file).getName();
            fileList.add(fileName);
        }
    }

    public Set<String> getFilePaths() {
        return filesPaths;
    }

}